Homelite CSP3816 - UT74123D, CSP4520 - UT74127D, CSP4518 - UT74125D User Manual
OPERATOR’S MANUAL
CSP3816 - UT74123D - 406 mm (16 in.) 38cc Chainsaw
CSP4518 - UT74125D - 457 mm (18 in.) 45cc Chainsaw
CSP4520 - UT74127D - 508 mm (20 in.) 45cc Chainsaw
Your new chainsaw has been engineered and manufactured to Homelite’s high standard for dependability, ease of operation, and
operator safety. Properly cared for, it will give you years of rugged, trouble-free performance.
WARNING: To reduce the risk of injury, the user must read and understand the operator’s manual before
using this product.
Thank you for buying a Homelite chainsaw.
SAVE THIS MANUAL FOR FUTURE REFERENCE
TABLE OF CONTENTS
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■ Introduction .......................................................................................................................................................................................... 2
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■ General Safety Rules ...................................................................................................................................................................... 3 - 4
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■ Specific Safety Rules ...................................................................................................................................................................... 4 - 5
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■ Symbols ........................................................................................................................................................................................... 6 - 7
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■ Specifications ....................................................................................................................................................................................... 7
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■ Features ............................................................................................................................................................................................... 8
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■ Operation ...................................................................................................................................................................................... 8 - 14
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■ Maintenance ............................................................................................................................................................................... 14 - 18
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■ Bar and Chain Combinations ............................................................................................................................................................ 18
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■ Troubleshooting .......................................................................................................................................................................... 18 - 19
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■ Warranty ............................................................................................................................................................................................. 19
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■ Safety Directive .................................................................................................................................................................................. 20
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■ Illustrations .......................................................................................................................................................................... Appendix A
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INTRODUCTION
IMPORTANT
Servicing requires extreme care and knowledge and should
be performed only by a qualified service technician. When
servicing use only identical Homelite replacement parts.
For safe operation, read and understand all instructions
before using the chainsaw. Follow all safety instructions.
Failure to follow all safety instructions listed below may
result in serious personal injury.
Look for this symbol to point out important safety precautions. It means
attention!!! Your safety is involved.
WARNING:
The operation of any tool can result in foreign objects being thrown into your eyes which may result
in severe eye damage. Before beginning tool operation, always wear safety goggles or safety
glasses with side shields and a full face shield when needed. We recommend Wide Vision Safety
Mask for use over spectacles or standard safety glasses with side shields. Always wear eye
protection.
WARNING:
Carefully read through this entire operator’s manual
before using your new saw. Pay close attention to the
Safety Rules and all Safety Alert Symbols including
Danger, Warning, and Caution. These safety rules are
for your safety and to prevent possible serious injury.
If you use your saw properly and only for what it is
intended, you will enjoy years of safe, reliable service.
UK - Page 2
GENERAL SAFETY RULES
WARNING:
The warnings, labels, and instructions found in this
section of the operator’s manual are for your safety.
Failure to follow all instructions may result in serious
personal injury.
Safe operation of this tool requires that you read and
understand this operator’s manual and all labels affixed to
the tool. Safety is a combination of using common sense,
staying alert, and knowing how your saw works.
READ ALL INSTRUCTIONS
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■ KNOW YOUR TOOL. Read the operator’s manual
■■
carefully. Learn the saw’s applications and limitations as
well as the specific potential hazards related to this tool.
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■ CHAINSAWS are designed for cutting wood only.
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■ KICK-BACK MAY OCCUR WHEN THE NOSE OR TIP
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OF THE GUIDE BAR touches an object or when the
wood closes in and pinches the saw chain in the cut.
Tip contact in some cases may cause a lightning-fast
reverse reaction kicking the guide bar up and back
toward the operator. Pinching the saw chain along the
top of the guide bar may push the guide bar rapidly back
towards the operator. Either of these reactions may
cause you to lose control of the saw which could result
in serious personal injury. DO NOT rely exclusively upon
the safety devices built into your saw. As a chainsaw
user, you should take several steps to keep your cutting
jobs free from accident or injury.
1. With a basic understanding of kick-back, you can
reduce or eliminate the element of surprise. Sudden
surprise contributes to accidents.
2. Keep a good firm grip on the saw with both hands
when the engine is running. Place your right hand
on the rear handle and your left hand on the front
handle with your thumbs and fingers encircling the
chainsaw handles. A firm grip together with a stiff left
arm will help you maintain control of the saw if
kick-back occurs.
3. Make sure that the area in which you are cutting is
free from obstructions. DO NOT let the nose of the
guide bar contact a log, branch, fence, or any other
obstruction that could be hit while you are operating
the saw.
4. Cut at high engine speeds. Always cut with the
engine running at full speed. Fully squeeze the
throttle trigger and maintain a steady cutting speed.
5. Do not overreach or cut above chest height.
6. Follow the manufacturer’s sharpening and
maintenance instructions for the saw chain.
7. Use only replacement bars and chains specified by
the manufacturer or the equivalent.
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■ DO NOT OPERATE A CHAINSAW WITH ONE HAND.
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Serious injury to the operator, helpers, and/or
bystanders may result from one-handed operation.
A chainsaw is intended for two-handed use.
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■ DO NOT OPERATE A CHAINSAW WHEN YOU ARE
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FATIGUED. Never operate a chainsaw when you are
tired or under the influence of medication, drugs,
or alcohol.
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■ USE SAFETY FOOTWEAR. Wear close-fitting clothing,
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protective gloves, and eye, hearing, and head
protection devices.
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■ DO NOT STAND ON ANY UNSTABLE SURFACE while
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using your chainsaw: that includes ladders, scaffolds,
trees, etc.
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■ USE CAUTION WHEN HANDLING FUEL. Move the
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chainsaw at least 50 feet (15 m) from the refuelling
point before starting the engine.
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■ DO NOT ALLOW OTHER PERSONS to be near the
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chainsaw when starting or cutting with the chainsaw.
Keep bystanders and animals out of the work area.
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■ DO NOT START CUTTING until you have a clear work
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area, secure footing, and a planned retreat path from
the falling tree.
UK - Page 3
GENERAL SAFETY RULES
■ KEEP ALL PARTS OF YOUR BODY away from the
saw chain when the engine is running.
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■ ALWAYS CARRY THE CHAINSAW WITH THE
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ENGINE STOPPED AND THE BRAKE ENGAGED, the
guide bar and saw chain to the rear, and the silencer
away from your body. When transporting the chainsaw,
use the appropriate guide bar scabbard.
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■ DO NOT OPERATE A CHAINSAW THAT IS
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DAMAGED, improperly adjusted, or not completely and
securely assembled. Be sure that the saw chain stops
moving when the throttle control trigger is released.
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■ TURN OFF THE ENGINE before putting the chainsaw
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down. DO NOT leave the engine running unattended.
As an additional safety precaution, apply the chain brake
before putting down the saw.
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■ USE EXTREME CAUTION when cutting small-size
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brush and saplings because slender material may catch
the saw chain and be whipped toward you or pull you
off balance.
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■ WHEN CUTTING A LIMB under tension, be alert for
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spring-back so that you will not be struck when the
tension in the wood fibres is released.
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■ KEEP THE HANDLES dry, clean, and free of oil or
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fuel mixture.
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■ OPERATE THE CHAINSAW ONLY in well-ventilated
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areas.
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■ DO NOT OPERATE A CHAINSAW IN A TREE unless
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you have been specifically trained to do so.
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■ ALL CHAINSAW SERVICE, other than the items listed
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in the instruction manual, and all maintenance should
be performed by competent chainsaw service
personnel. (For example, if improper tools are used to
remove the flywheel or if an improper tool is used to
hold the flywheel in order to remove the clutch,
structural damage to the flywheel could occur and
subsequently cause the flywheel to burst.)
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■ KEEP SAFE-T-TIP® ANTI-KICK-BACK NOSE GUARD
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properly mounted on the guide bar to prevent rotational
kick-back.
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■ FOLLOW THE SHARPENING and maintenance
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instructions for the saw chain.
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■ USE ONLY THE REPLACEMENT GUIDE BARS and
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low kick-back chains specified for your saw.
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■ DO NOT adapt your powerhead to a bow guide or use it to
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power any attachments or devices not listed for your saw.
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■ SAVE THESE INSTRUCTIONS. Refer to them
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frequently and use to instruct other users. If you lend
someone this tool, lend them these instructions also.
SPECIFIC SAFETY RULES
WARNING:
The warnings, labels, and instructions found in this
section of the operator’s manual are for your safety.
Failure to follow all instructions may result in serious
personal injury.
GENERAL PRECAUTIONS
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■ DO NOT CUT VINES and/or small undergrowth (less
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than 76 mm (3 in.) in diameter).
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■ SILENCER SURFACES ARE VERY HOT during and
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after operation of the chainsaw; keep all body parts
away from the silencer. Serious burns may occur if
contact is made with the silencer.
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■ ALWAYS HOLD THE CHAINSAW WITH BOTH HANDS
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when the engine is running. Use a firm grip with thumbs
and fingers encircling the chainsaw handles.
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■ NEVER LET ANYONE USE YOUR CHAINSAW who has
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not received adequate instructions in its proper use.
This applies to rentals as well as privately owned saws.
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■ BEFORE YOU START THE ENGINE, make sure the
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saw chain is not contacting any object.
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■ OPERATE THE CHAINSAW only in well ventilated
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areas.
UK - Page 4
SPECIFIC SAFETY RULES
PROPER CLOTHING FOR SAFETY
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■ Wear close-fitting clothing. Always wear heavy, long
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trousers, boots, and gloves. Do not wear jewellery,
shorts, sandals, or go barefoot. Do not wear loose-fitting
clothing, which could be drawn into the engine or catch
the chain or undergrowth. Wear overalls, jeans, or
leggings made of cut-resistant material or ones that
contain cut-resistant inserts. Secure hair so that it is
above shoulder level.
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■ Wear non-slip safety footwear and heavy-duty gloves to
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improve your grip and to protect your hands.
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■ Wear eye, hearing, and head protection when operating
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this equipment.
REFUELLING (DO NOT SMOKE!)
■ To reduce the risk of fire and burn injury, handle fuel
with care. It is highly flammable.
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■ Mix and store fuel in a container approved for petrol.
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■ Mix fuel outdoors where there are no sparks or flames.
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■ Select bare ground, stop the engine, and allow it to cool
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before refuelling.
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■ Loosen the fuel cap slowly to release pressure and to
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keep fuel from escaping around the cap.
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■ Tighten the fuel cap securely after refuelling.
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■ Wipe spilled fuel from the unit. Move 15 m (50 ft.) away
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from refuelling site before starting engine.
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■ Never attempt to burn off spilled fuel under any
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circumstances.
PUSH AND PULL
The reaction force is always opposite to the direction the
chain is moving. Thus, the operator must be ready to
control the PULL when cutting on the bottom edge of the
bar and the PUSH when cutting along the top edge.
NOTE: Your chainsaw has been fully factory tested. It is
normal to find some slight oil residue on the saw.
MAINTENANCE PRECAUTIONS
Never operate a chainsaw that is damaged, improperly
adjusted, or is not completely and securely assembled.
Be sure that the saw chain stops moving when the throttle
control trigger is released. If the saw chain moves at idling
speed, the carburettor may need adjusting. Refer to
“Operation–Adjusting Idling speed” later in this manual.
If the saw chain still moves at idling speed after
adjustment has been made, contact a Homelite service
dealer for adjustment and discontinue use until the repair is
made.
WARNING:
All chainsaw service, other than items in the
operator’s manual maintenance instructions, should
be performed by competent chainsaw service
personnel. If improper tools are used to remove the
flywheel or clutch, or if an improper tool is used to
hold the flywheel in order to remove the clutch,
structural damage to the flywheel could occur which
could subsequently cause the flywheel to burst and
serious injury could result.
BASIC PRECAUTIONS IN THE CUTTING/
WORK AREA
■■
■ Do not operate a chainsaw in a tree.
■■
■■
■ Do not cut from a ladder: this is extremely dangerous.
■■
■■
■ Keep bystanders and animals out of the work area.
■■
Do not allow other persons to be nearby during starting
or cutting with the chainsaw.
NOTE: The size of the work area depends on the job
being performed as well as the size tree or workpiece
involved. For example, felling a tree requires a larger work
area than making other cuts such as bucking cuts etc.
KICK-BACK
Kick-back is a dangerous reaction that can lead to serious
injury. Do not rely only on the safety devices provided with
your saw. As a chainsaw user, you must take special
safety precautions to help keep your cutting jobs free from
accident or injury.
NOTE: Refer to “Operation” later in this manual for added
information on kick-back and how to avoid serious
personal injury.
UK - Page 5
SYMBOLS
Important: Some of the following symbols may be used on your tool. Please study them and learn their meaning. Proper
interpretation of these symbols will allow you to operate the tool better and more safely.
SYMBOL NAME EXPLANATION
Safety Alert Symbol
Read Your Operator’s Manual
Eye, Hearing, and Head Protection
SAFE-T-TIP
®
Nose Guard
No Smoking
Operate with Two Hands
Indicates danger, warning or caution. It means
attention!!! Your safety is involved.
Your manual contains special messages to bring
attention to potential safety concerns, machine damage
as well as helpful operating and servicing information.
Please read all the information carefully to avoid injury
and machine damage.
Wear eye, hearing, and head protection when operating
this equipment.
The SAFE-T-TIP
®
nose guard on the guide bar helps
prevent kick-back.
No smoking, sparks, or open flame when mixing fuel or
filling the fuel tank.
Hold and operate the saw properly with both hands.
RUN
O
STOP
One Handed
Carbon Monoxide
Kick-back
Bar Nose Contact
Gloves
Switch
Do not operate the saw using only one hand.
Engines produce carbon monoxide which is an odourless,
deadly poison. Do not operate in an enclosed area.
Danger – beware of kick-back.
Avoid bar nose contact.
Wear non-slip gloves.
To stop the engine, move the switch to the “O” STOP
position.
I = ON to Run
O = OFF to Stop
UK - Page 6
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